CN204222498U - A kind of dust absorption blackboard eraser - Google Patents

Abstract

The utility model discloses a dust-absorbing blackboard eraser, which comprises an upper box body and a lower box body connected to each other. The upper box body and the lower box body are movably connected by hinges. A wiping plate is slidably connected in the opening, and a suction layer seam is reserved between the wiping plate and the side wall of the opening. A filter screen separating the inner space of the upper box body and the lower box body is arranged on the top of the lower box body. A blower fan is arranged at the air exhaust port. The utility model reserves a suction layer seam on the upper box of the blackboard eraser. When wiping the blackboard left and right, the suction layer seam is always on the side where the dust falls, and the fallen dust is sucked back by the blower. All are absorbed to the filter net through the suction layer seam, so as to realize dust-free operation. When there is too much dust on the filter screen, the upper box body and the lower box body can be opened to shake off the dust attached to the filter screen, which is convenient for the next use.

Description

A dust-absorbing blackboard eraser

technical field

The utility model relates to a blackboard eraser, in particular to a dust-absorbing blackboard eraser.

Background technique

At present, conventional blackboard erasers basically have two types of brush type and felt type, and all use the principle of sliding friction to remove chalk writing on the blackboard. Materials such as brushes and felts have a good adsorption effect on dust. When the surface of the brush type or felt type blackboard eraser is relatively clean, it has a good wiping effect and is not easy to generate dust, but the adsorption effect of any material is There is a limit, and felt is no exception. Therefore, when the brush type or felt type blackboard eraser has been used for a period of time, a thick layer of chalk dust is adsorbed on its surface. At this time, if you continue to use it to wipe the blackboard, not only cannot Wipe the blackboard clean, and it will also cause chalk dust to fly around, pollute the air, and damage human health.

Contents of the invention

The purpose of the utility model is to provide a dust-absorbing blackboard eraser which has a simple structure, is convenient to use and can achieve a "dust-free" wiping effect, so as to overcome the deficiencies in the prior art.

The technical scheme of the utility model: a dust-absorbing blackboard eraser, including an upper box body and a lower box body connected to each other, the upper box body and the lower box body are connected by hinges, and an opening is arranged on the top of the upper box body , a wiping plate is slidably connected in the opening, a suction seam is reserved between the wiping plate and the side wall of the opening, and a filter screen is arranged on the top of the lower box body to separate the inner space of the upper box body and the lower box body. A blower fan is arranged at the air outlet below the net.

The two ends of the wiping plate are slidably connected to the guide rods, and the guide rods are installed at both ends of the opening on the upper box body.

The fan is connected to the battery box set in the lower box body, and is controlled by a switch set on the outer wall of the lower box body.

The filter is a flexible fiber filter, which has good adsorption and is easy to clean.

Due to the adoption of the above technical solution, the utility model has the advantages that: the utility model reserves a suction layer seam on the upper box body of the blackboard eraser, and when wiping the blackboard left and right, the suction layer seam is always on the side where the dust falls , and the falling dust is all absorbed to the filter net through the suction layer seam due to the suction effect of the fan, so as to realize dust-free operation. When there is too much dust on the filter screen, the upper box body and the lower box body can be opened to shake off the dust attached to the filter screen, which is convenient for the next use. Therefore, the utility model is not only simple in structure, but also convenient to use, and realizes the effect of "dust-free" wiping, avoiding chalk dust flying around, polluting the air, and damaging human health.

Description of drawings

Fig. 1 is the perspective view of structural representation of the present utility model;

Fig. 2 is the sectional view of structural representation of the utility model;

Fig. 3 is the top view of the structure schematic diagram when the utility model is wiped to the left;

Fig. 4 is a top view of the structure diagram of the utility model when wiping to the right.

Explanation of reference signs: 1-wiping plate, 2-sliding guide rod, 3-upper box body, 4-hinge, 5-lower box body, 6-switch, 7-battery box, 8-fan, 9-exhaust air Mouth, 10-opening, 11-filter, 12-suction seam.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Example

The schematic diagram of the structure of the dust-absorbing blackboard eraser is shown in Figure 1, including an upper box body 3 and a lower box body 5 that are connected to each other. The upper box body 3 and the lower box body 5 are flexibly connected by hinges 4. 3 There is an opening 10 on the top, and a wiping plate 1 is slidably connected in the opening 10. A suction layer seam 12 is reserved between the wiping plate 1 and the side wall of the opening 10, and a separate upper box body is arranged on the top of the lower box body 5. 3 and the filter screen 11 in the inner space of the lower box body 5, the filter screen 11 is a flexible fiber filter screen, and a fan 8 is arranged at the air outlet 9 below the filter screen 11. Both ends of the wiping plate 1 are slidably connected to guide rods 2 , and the guide rods 2 are installed at both ends of the opening 10 on the upper box body 3 . The fan 8 is connected with the battery box 7 arranged in the lower box body 5 and controlled by the switch 6 arranged on the outer wall of the lower box body 5 . Therefore, when wiping the blackboard left and right, the suction layer slit 12 is always on the side where the dust falls, and the dropped dust is all absorbed onto the filter screen 11 by the suction layer slit 12 due to the suction effect of the blower fan 8. This enables dust-free operation. When the filter screen 11 has too much dust, the upper box body 3 and the lower box body 5 can be opened, and the dust attached to the filter screen 11 can be shaken off, which is convenient for next use.

Claims (4)

1. a dust absorption blackboard eraser, comprise the upper cartridge body (3) and lower box body (5) that are interconnected, it is characterized in that: described upper cartridge body (3) and lower box body (5) adopt hinge (4) to be flexibly connected, upper cartridge body (3) top is provided with opening (10), Wiper plate (1) is slidably connected in opening (10), be reserved with between described Wiper plate (1) and opening (10) sidewall and inhale layered suture (12), the screen pack (11) separating upper cartridge body (3) and lower box body (5) inner space is provided with at lower box body (5) top, exhaust outlet (9) place of screen pack (11) below is provided with blower fan (8).

2. dust absorption blackboard eraser according to claim 1, is characterized in that: described Wiper plate (1) two ends are slidably connected guide rod (2), and guide rod (2) is arranged on opening (10) two ends on upper cartridge body (3).

3. dust absorption blackboard eraser according to claim 1, is characterized in that: described blower fan (8) is connected with the battery case (7) be arranged in lower box body (5), and is controlled by the switch (6) be arranged on lower box body (5) outer wall.

4. dust absorption blackboard eraser according to claim 1, is characterized in that: described screen pack (11) is flexible fiber screen pack.